# Iteration 8 — Test Implementation Notes

## Plan file addressed

`docs/testing/plans/08-request-context.md`

## Tests created

### src/config/request_context.rs (22 new tests, 51 total in file)

| Test name | What it verifies |
|---|---|
| `state_empty_context` | Empty context → empty StateFlags |
| `state_with_role_only` | Role set → ROLE flag |
| `state_with_empty_session` | Empty session → SESSION_EMPTY flag |
| `state_flags_combine_role_and_session` | Multiple flags combine correctly |
| `role_info_errors_when_no_role` | No role → error |
| `role_info_succeeds_with_role` | Role present → exports prompt |
| `agent_info_errors_when_no_agent` | No agent → error |
| `rag_info_errors_when_no_rag` | No RAG → error |
| `use_role_obj_errors_when_agent_active` | Agent blocks role assignment |
| `exit_rag_clears_rag` | exit_rag() sets rag to None |
| `discontinuous_last_message_sets_continuous_false` | Marks last message non-continuous |
| `discontinuous_last_message_noop_when_none` | No last message → no-op |
| `before_chat_completion_sets_last_message` | Creates LastMessage with empty output |
| `role_like_mut_returns_none_when_empty` | No active scope → None |
| `role_like_mut_returns_role_when_only_role` | Role only → returns role |
| `role_like_mut_prefers_session_over_role` | Session takes priority |
| `working_mode_cmd` | CMD mode flags correct |
| `working_mode_repl` | REPL mode flags correct |
| `session_file_returns_yaml_path` | Correct .yaml suffix |
| `session_file_with_subdir` | subdir/name → nested path |
| `is_compressing_session_false_when_no_session` | No session → false |
| `is_compressing_session_false_with_default_session` | Default session → false |

**Total: 22 new tests (272 total in suite)**

## Bugs discovered

None.

## Observations for future iterations

1. **Rag struct has no Default**: Rag requires an AppConfig, name,
   embedding model, and HNSW index. Can't create test instances
   without heavy setup. RAG-related state tests (state with RAG,
   exit_rag with actual RAG) deferred.

2. **role_like_mut priority is session > agent > role > None**:
   The session-over-role priority is verified. Agent priority
   can't be easily tested without agent init (filesystem).

3. **StateFlags is a bitflags type**: Tested empty, individual
   flags (ROLE, SESSION_EMPTY), and combinations. The SESSION
   flag (non-empty session) requires adding messages to a session
   which needs more setup — deferred.

4. **info() and sysinfo() require model provider config**: These
   format system info strings that include model details. Testing
   requires a valid model provider configuration.

5. **The RequestContext test file now has 51 tests** spanning
   iterations 1, 4, 5, 7, and 8. It's the most heavily tested
   module, which matches its role as the central state container.

## Next iteration

Plan file 09: REPL Commands — REPL command handlers, state
assertions, argument parsing.